void idelete(int a[]){
	int i, index;
	scanf("%d", &index);
	if (index<0 || index >= count){
		printf("-1");
		return;
	}
	else{
		for (i = index; i<(count - 1); i++){
			a[i] = a[i + 1];
		}
	}
	count--;
	print_array(a);
}